Exhibit 13-3: Compare the following coefficients of correlation and their corresponding Ns, then answer the questions.Notice that all correlation values are statistically significant.
-Refer to Exhibit 13-3.The coefficient for which the coefficient of determination equals .64?
A) r = +.80 N = 80
B) r = +.32 N = 300
C) r = -32 N = 40
D) r = -.87 N = 80

Question

Quizplus · Accepted Answer

The coefficient of determination (r²) measures the proportion of variance in one variable that is accounted for by the other variable. The highest r² value is .64, which means that 64% of the variance in one variable is explained by the other variable. Among the given options, only coefficient A has an r value of +.80 with N = 80, which corresponds to an r² value of .64.

Exhibit 13-3: Compare the Following Coefficients of Correlation and Their